基于小波包分解的交流腐蚀信号时频表征方法

Time-frequency Description of AC Corrosion Signals Using Wavelet Packet Decomposition

建立了基于小波包分解的腐蚀信号时频表征方法 ,讨论了分解序列与子频带频率递增顺序的不一致性 ,及小波包的选择对表征结果的影响。结果表明该方法能有效地表达交流腐蚀信号的非线性特征 。

A new time frequency description method of AC corrosion signals was described by wavelet packet decomposition It is found that the decomposition order is inconsistent with frequency increase of subbands The choice of wavelet packets is also very important for characterizing the nonlinearity of AC corrosion signals